Vehicle-wheel.



THOMAS BLACKWOOD MURRAY, F SCOTSTOUN, SCOTLAND.

AEN@

VEHICLE-WHEEL.

inea-sigas Specification of Letters Patent.

Fatented duly let, initial.

Application-filed June 4, 1912. Serial No. 701,620.

Tooll whom t may concern' Be it known that I, THOMAS Bnicitwoon .MURRAY,B.- Sc.,.a subject of the King 'ot Great Britain and Ireland, and aresident ofl Scotstoun, in the county ot Renfrew,

Scotland, have invented a certain new and useful Vehiele-VVheel, and ofwhich the following is thespeciiication.

This invention relates to wheels for heavy vehiclesand particularly tomeansimproved means for securing and removing the tire from thewheelperiphery.

In the accompanying drawings, Figure l is a transverse section through atire and wheel periphery in-whehiny' invention is embodied in'one form;Fig. 2 is a similar view ofa modified construction; Fig. 3 is a similarview showing 1 my improved drawoii device; Fig. 4 is a partial sideelevation of a Wheel 'periphery shaped to receive this torm of draw-olf;and Fig. 5 is a cross lsection showing a modiiied form `oit draw-ottdevice.

As. shown in rig. '1 aus. 'SG1-ia ambas 'mounted on the band a, whichwill be hereafter referred to as a detachable rlm, and

.which is 'faced on its inner-.periphery with rubber b. The detachable'rim' a vis cylindrical on its outer periphery, and of substantially thesame Width as the tire 2), while the inner periphery is eoned orbeveled, so

that the rim a is wedge-shaped'in cross section.' The wheel'periphery c,here made integral with the wheel web, is inclined to the bevel of theinner periphery of the rim a, so that the latter with the tire b car, bereadily forced onto the wheel.

In order to retain the tire in position on L'. the wheel, I haveprovided an inwardly eX- 'te'nding fiange cl on the wheel periphery in.

v,otthe latter. lVhile the tire is thus securely held on the wheelperiphery, it is not con! l'-tined in any way and its power of absorbingshock and vibration is not` lessened as it ywould be it' confined withinaA channel or wheel periphery.

sheath. The inner edge of thonet-.aming ring is preferably provided withan oi'i'set iian'ge /lzy which engages within the inner periphery ot thedepending flange d on c.

lThe outer edge of the ring f/ isfalso proii'ided, preferably, with alateral bead or flange y to serve as a wearing lange and to protect theheads ofthe bolts c.

For twin tires of the type shown in Fig.

Q, I have shown a wheel comprising a .wooden telly c1, carrying a3 fixedrim or wheel periphery 70 tapered from the center inwardly on bothvsides. A retaining ring g is providedon each/side of the wheel and theyare held in placeY by threaded bolts Z passing through apertures in thetelly al.

A. simple o lra'w-o2 device for wheels ct'.

the type shown in Fig. l is illustrated in Figsf?)v and 4. Transversegrooves m are formed 1n the outersurtace oi the wheel periphery, thelatter being 'formed in part in the enlargements Fig. 4t). llilhen it isdesired to detach the tire after the retainllfhe length of the clawbolts is such that when they lie inthe grooves m, their threaded endsproject through apertures .in dogs y) h eldtemporarily against theenlargements 1 on the wheel periphery. -Nuts s screwed on the ends ofthe bolts n, are then turned up on the latter until they bear againstthe dogs p-whereupon further rotation thereof, draws they rim down .thebevel ot the wheel periphery and thus trees it for ready removal.

For the removal of twin tires, the device shown in Fig. 5 maybeemployed. At intervals the wheel periphery icl is apertured to permitthe radial insertion ol the stem ot the wedge bolt t. A bea-ring'platefw passed over the threaded stem rests against the wheel periphery andaords an abutment against which the nut s bears, to draw down thewedge-shaped head of the bolt t, thus spreading the tires apart andforcing them down the oppositely inclined faces ot the Obviously thedraw-cti bolts shown in Fig. 3 may also be used either inrtlzombinationwith the' wedge device or al e for the removal of twin tires.

I claim as my invention:

' 1. In a vehicle wheel, a detachable rim Wedge-shaped in transversecross section, but inclined only on its inner periphery, a fixed wheelperiphery beveled on its outer periphery to the incline of the innerperiphery oi the detachable riiii and of substantially the saine widthas the latter, a radially inward extending flange on the side ot' leastdiaiiie# tei: of said wheel periphery, a retaining ring bearing againstthe edge of the detachable i'iiii to-liold the latter in position on4the wheel, said retaining ring extending lroin the wheel peripheryradially ontward to a point within the outer periphery ot' thedetachable rim on its side of least internal diameter, and bolts passingthrough said retaining ring and said flange on the wheel periphery tosecure said retaining ring in position, saidwgretainingvring having aniiiwardly extending flange oiisetto engage the 'inner periphery of saidflange on the `wheel periphery, substantially as described.

In a lVehicle wheel, a. detachable rim wedge-shaped in transverse'crosssection, but inclined only on its iniierlperiphery, av

fixed Wheel periphery beveled ,on its outer periphery to the incline ofthe inner periphery of the detachable rini and of substantially thesaine width as vthe latter, a radially inward extending flange on theside of leastA vdiameter of said Wheel periphery, a retaining ringbearing against the edge of the detachable i'iin to hold the latter inposition oii the wheel, said retaining ring extending iroiii the wheelperiphery radially outward to a point within the outer periphery'of thedetachable riiii on its side of least internal diaiiieter, and boltspassing through said retain-ing ring` and said flange oii the wheelperiphery to secure said retaining ring in position, said retainingi'iiig having at its outer edge a laterally extending llaiige or beadoverlying and protecting the bolt heads, substantially as described. v

3, In a vehicle wheel, a detachable rim tapered on its inner periphery,a wheel hai'- ing` a xed periphery tapered to 'the incline of the innerperiphery of said detachable rini, retaining means. beariiigagainst theedge of the detachable rim at its side of least internal diameter,and'iiieans for securing said retaining means/to the fixed periphery ofthe wheel, said fixed periphery being Atransversely channeled toreceivea 'with-v drawal bolt, substantially as described.

ln testimony whereof I have signed my naine to this specification, inthe presence -of two subscribing witnesses.

riioiiis BLieKwooD iiUiiiiiY.

Y Witnesses

